7
1.4.1.
Camera Select Switch
The Camera select switch provides eight camera selection modes. The camera select
modes are defined in Table 1-1. The selection modes are described in the following
sections.
Table 1-1: Camera Select Modes
Camera Select Switch
Mode
0 Camera
A
1 Camera
B
2 Camera
C
3 Camera
D
4
Camera Control CC1 & CC2
5
Camera Control CC3 & CC4
6
Camera Link
TM
serial link
7
RS-232 serial port
Switch positions 0-3 provide fixed camera A/B/C/D selection. Camera selection is
fixed (static) and is unaffected by the camera control signal states or the serial control
messages.
Switch positions 4-5 enable camera selection based on the states of the Camera
Control (CC) that are part of the Camera Link
TM
interface. Camera selection may be
made by CC signals 1&2, or by 3&4. Camera Control signals 3&4 are often unused
by the camera and are available for controlling the multiplexer. Switch position 4
selects the camera based on the states of CC1 & CC2 as shown in Table 1-2. Switch
position 5 selects the camera based on the states of CC3 & CC4 as shown in Table 1-
3. Note that the frame grabber must hold the CC lines in a steady (static) state.
